Charging units



FIG. 1 is a perspective view of a charging unit showing the front, top, and right side of my new design in a closed position as viewed from the right side of the page;

FIG. 2 is a side elevational view of one side thereof;

FIG. 3 is a side elevational view of the opposite side thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a top elevational view thereof; and,

FIG. 7 is a bottom elevational view thereof. 

CLAIM The ornamental design for charging units, as shown and described. 